Richard Blimmel / Mbed 2 deprecated CIG_HTTPClient

HTTPClient using static IP

Dependencies:   mbed

NetServices/services/http/server/HTTPRequestHandler.cpp@0:d8f2f7d5f31b, 2011-05-30 (annotated)

Committer:
mr_q
Date:
Mon May 30 11:53:37 2011 +0000
Revision:
0:d8f2f7d5f31b
v0.01 Draft

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mr_q 0:d8f2f7d5f31b 1
mr_q 0:d8f2f7d5f31b 2 /*
mr_q 0:d8f2f7d5f31b 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
mr_q 0:d8f2f7d5f31b 4
mr_q 0:d8f2f7d5f31b 5 Permission is hereby granted, free of charge, to any person obtaining a copy
mr_q 0:d8f2f7d5f31b 6 of this software and associated documentation files (the "Software"), to deal
mr_q 0:d8f2f7d5f31b 7 in the Software without restriction, including without limitation the rights
mr_q 0:d8f2f7d5f31b 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
mr_q 0:d8f2f7d5f31b 9 copies of the Software, and to permit persons to whom the Software is
mr_q 0:d8f2f7d5f31b 10 furnished to do so, subject to the following conditions:
mr_q 0:d8f2f7d5f31b 11
mr_q 0:d8f2f7d5f31b 12 The above copyright notice and this permission notice shall be included in
mr_q 0:d8f2f7d5f31b 13 all copies or substantial portions of the Software.
mr_q 0:d8f2f7d5f31b 14
mr_q 0:d8f2f7d5f31b 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
mr_q 0:d8f2f7d5f31b 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
mr_q 0:d8f2f7d5f31b 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
mr_q 0:d8f2f7d5f31b 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
mr_q 0:d8f2f7d5f31b 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mr_q 0:d8f2f7d5f31b 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
mr_q 0:d8f2f7d5f31b 21 THE SOFTWARE.
mr_q 0:d8f2f7d5f31b 22 */
mr_q 0:d8f2f7d5f31b 23
mr_q 0:d8f2f7d5f31b 24 #include "core/netservice.h"
mr_q 0:d8f2f7d5f31b 25 #include "HTTPRequestHandler.h"
mr_q 0:d8f2f7d5f31b 26
mr_q 0:d8f2f7d5f31b 27 #include <string.h>
mr_q 0:d8f2f7d5f31b 28
mr_q 0:d8f2f7d5f31b 29 //#define __DEBUG
mr_q 0:d8f2f7d5f31b 30 #include "dbg/dbg.h"
mr_q 0:d8f2f7d5f31b 31
mr_q 0:d8f2f7d5f31b 32 #define HTTP_REQUEST_TIMEOUT 5000
mr_q 0:d8f2f7d5f31b 33
mr_q 0:d8f2f7d5f31b 34 HTTPRequestHandler::HTTPRequestHandler(const char* rootPath, const char* path, TCPSocket* pTCPSocket) : NetService(),
mr_q 0:d8f2f7d5f31b 35 m_pTCPSocket(pTCPSocket), m_reqHeaders(), m_respHeaders(),
mr_q 0:d8f2f7d5f31b 36 m_rootPath(rootPath), m_path(path), m_errc(200),
mr_q 0:d8f2f7d5f31b 37 m_watchdog(), m_timeout(0), m_closed(false), m_headersSent(false) //OK
mr_q 0:d8f2f7d5f31b 38 {
mr_q 0:d8f2f7d5f31b 39 //Read & parse headers
mr_q 0:d8f2f7d5f31b 40 readHeaders();
mr_q 0:d8f2f7d5f31b 41 m_pTCPSocket->setOnEvent(this, &HTTPRequestHandler::onTCPSocketEvent);
mr_q 0:d8f2f7d5f31b 42 setTimeout(HTTP_REQUEST_TIMEOUT);
mr_q 0:d8f2f7d5f31b 43 }
mr_q 0:d8f2f7d5f31b 44
mr_q 0:d8f2f7d5f31b 45 HTTPRequestHandler::~HTTPRequestHandler()
mr_q 0:d8f2f7d5f31b 46 {
mr_q 0:d8f2f7d5f31b 47 close();
mr_q 0:d8f2f7d5f31b 48 }
mr_q 0:d8f2f7d5f31b 49
mr_q 0:d8f2f7d5f31b 50 void HTTPRequestHandler::onTimeout() //Connection has timed out
mr_q 0:d8f2f7d5f31b 51 {
mr_q 0:d8f2f7d5f31b 52 close();
mr_q 0:d8f2f7d5f31b 53 }
mr_q 0:d8f2f7d5f31b 54
mr_q 0:d8f2f7d5f31b 55 void HTTPRequestHandler::close() //Close socket and destroy data
mr_q 0:d8f2f7d5f31b 56 {
mr_q 0:d8f2f7d5f31b 57 if(m_closed)
mr_q 0:d8f2f7d5f31b 58 return;
mr_q 0:d8f2f7d5f31b 59 m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else
mr_q 0:d8f2f7d5f31b 60 m_watchdog.detach();
mr_q 0:d8f2f7d5f31b 61 onClose();
mr_q 0:d8f2f7d5f31b 62 m_pTCPSocket->resetOnEvent();
mr_q 0:d8f2f7d5f31b 63 m_pTCPSocket->close();
mr_q 0:d8f2f7d5f31b 64 delete m_pTCPSocket; //Can safely destroy socket
mr_q 0:d8f2f7d5f31b 65 NetService::close();
mr_q 0:d8f2f7d5f31b 66 }
mr_q 0:d8f2f7d5f31b 67
mr_q 0:d8f2f7d5f31b 68 map<string, string>& HTTPRequestHandler::reqHeaders() //const
mr_q 0:d8f2f7d5f31b 69 {
mr_q 0:d8f2f7d5f31b 70 return m_reqHeaders;
mr_q 0:d8f2f7d5f31b 71 }
mr_q 0:d8f2f7d5f31b 72
mr_q 0:d8f2f7d5f31b 73 string& HTTPRequestHandler::path() //const
mr_q 0:d8f2f7d5f31b 74 {
mr_q 0:d8f2f7d5f31b 75 return m_path;
mr_q 0:d8f2f7d5f31b 76 }
mr_q 0:d8f2f7d5f31b 77
mr_q 0:d8f2f7d5f31b 78 int HTTPRequestHandler::dataLen() const
mr_q 0:d8f2f7d5f31b 79 {
mr_q 0:d8f2f7d5f31b 80 map<string,string>::iterator it;
mr_q 0:d8f2f7d5f31b 81 it = m_reqHeaders.find("Content-Length");
mr_q 0:d8f2f7d5f31b 82 if( it == m_reqHeaders.end() )
mr_q 0:d8f2f7d5f31b 83 {
mr_q 0:d8f2f7d5f31b 84 return 0;
mr_q 0:d8f2f7d5f31b 85 }
mr_q 0:d8f2f7d5f31b 86 return atoi((*it).second.c_str()); //return 0 if parse fails, so that's fine
mr_q 0:d8f2f7d5f31b 87 }
mr_q 0:d8f2f7d5f31b 88
mr_q 0:d8f2f7d5f31b 89 int HTTPRequestHandler::readData(char* buf, int len)
mr_q 0:d8f2f7d5f31b 90 {
mr_q 0:d8f2f7d5f31b 91 return m_pTCPSocket->recv(buf, len);
mr_q 0:d8f2f7d5f31b 92 }
mr_q 0:d8f2f7d5f31b 93
mr_q 0:d8f2f7d5f31b 94 string& HTTPRequestHandler::rootPath() //const
mr_q 0:d8f2f7d5f31b 95 {
mr_q 0:d8f2f7d5f31b 96 return m_rootPath;
mr_q 0:d8f2f7d5f31b 97 }
mr_q 0:d8f2f7d5f31b 98
mr_q 0:d8f2f7d5f31b 99 void HTTPRequestHandler::setErrCode(int errc)
mr_q 0:d8f2f7d5f31b 100 {
mr_q 0:d8f2f7d5f31b 101 m_errc = errc;
mr_q 0:d8f2f7d5f31b 102 }
mr_q 0:d8f2f7d5f31b 103
mr_q 0:d8f2f7d5f31b 104 void HTTPRequestHandler::setContentLen(int len)
mr_q 0:d8f2f7d5f31b 105 {
mr_q 0:d8f2f7d5f31b 106 char len_str[6] = {0};
mr_q 0:d8f2f7d5f31b 107 sprintf(len_str, "%d", len);
mr_q 0:d8f2f7d5f31b 108 respHeaders()["Content-Length"] = len_str;
mr_q 0:d8f2f7d5f31b 109 }
mr_q 0:d8f2f7d5f31b 110
mr_q 0:d8f2f7d5f31b 111 map<string, string>& HTTPRequestHandler::respHeaders()
mr_q 0:d8f2f7d5f31b 112 {
mr_q 0:d8f2f7d5f31b 113 return m_respHeaders;
mr_q 0:d8f2f7d5f31b 114 }
mr_q 0:d8f2f7d5f31b 115
mr_q 0:d8f2f7d5f31b 116 int HTTPRequestHandler::writeData(const char* buf, int len)
mr_q 0:d8f2f7d5f31b 117 {
mr_q 0:d8f2f7d5f31b 118 if(!m_headersSent)
mr_q 0:d8f2f7d5f31b 119 {
mr_q 0:d8f2f7d5f31b 120 m_headersSent = true;
mr_q 0:d8f2f7d5f31b 121 writeHeaders();
mr_q 0:d8f2f7d5f31b 122 }
mr_q 0:d8f2f7d5f31b 123
mr_q 0:d8f2f7d5f31b 124 return m_pTCPSocket->send(buf, len);
mr_q 0:d8f2f7d5f31b 125 }
mr_q 0:d8f2f7d5f31b 126
mr_q 0:d8f2f7d5f31b 127 void HTTPRequestHandler::setTimeout(int ms)
mr_q 0:d8f2f7d5f31b 128 {
mr_q 0:d8f2f7d5f31b 129 m_timeout = 1000*ms;
mr_q 0:d8f2f7d5f31b 130 resetTimeout();
mr_q 0:d8f2f7d5f31b 131 }
mr_q 0:d8f2f7d5f31b 132
mr_q 0:d8f2f7d5f31b 133 void HTTPRequestHandler::resetTimeout()
mr_q 0:d8f2f7d5f31b 134 {
mr_q 0:d8f2f7d5f31b 135 m_watchdog.detach();
mr_q 0:d8f2f7d5f31b 136 m_watchdog.attach_us<HTTPRequestHandler>(this, &HTTPRequestHandler::onTimeout, m_timeout);
mr_q 0:d8f2f7d5f31b 137 }
mr_q 0:d8f2f7d5f31b 138
mr_q 0:d8f2f7d5f31b 139
mr_q 0:d8f2f7d5f31b 140 void HTTPRequestHandler::readHeaders()
mr_q 0:d8f2f7d5f31b 141 {
mr_q 0:d8f2f7d5f31b 142 static char line[128];
mr_q 0:d8f2f7d5f31b 143 static char key[128];
mr_q 0:d8f2f7d5f31b 144 static char value[128];
mr_q 0:d8f2f7d5f31b 145 while( readLine(line, 128) > 0) //if == 0, it is an empty line = end of headers
mr_q 0:d8f2f7d5f31b 146 {
mr_q 0:d8f2f7d5f31b 147 int n = sscanf(line, "%[^:]: %[^\n]", key, value);
mr_q 0:d8f2f7d5f31b 148 if ( n == 2 )
mr_q 0:d8f2f7d5f31b 149 {
mr_q 0:d8f2f7d5f31b 150 DBG("\r\nRead header : %s : %s\r\n", key, value);
mr_q 0:d8f2f7d5f31b 151 m_reqHeaders[key] = value;
mr_q 0:d8f2f7d5f31b 152 }
mr_q 0:d8f2f7d5f31b 153 //TODO: Impl n==1 case (part 2 of previous header)
mr_q 0:d8f2f7d5f31b 154 }
mr_q 0:d8f2f7d5f31b 155 }
mr_q 0:d8f2f7d5f31b 156
mr_q 0:d8f2f7d5f31b 157 void HTTPRequestHandler::writeHeaders() //Called at the first writeData call
mr_q 0:d8f2f7d5f31b 158 {
mr_q 0:d8f2f7d5f31b 159 static char line[128];
mr_q 0:d8f2f7d5f31b 160
mr_q 0:d8f2f7d5f31b 161 //Response line
mr_q 0:d8f2f7d5f31b 162 sprintf(line, "HTTP/1.1 %d MbedInfo\r\n", m_errc); //Not a violation of the standard not to include the descriptive text
mr_q 0:d8f2f7d5f31b 163 m_pTCPSocket->send(line, strlen(line));
mr_q 0:d8f2f7d5f31b 164
mr_q 0:d8f2f7d5f31b 165 map<string,string>::iterator it;
mr_q 0:d8f2f7d5f31b 166 while( !m_respHeaders.empty() )
mr_q 0:d8f2f7d5f31b 167 {
mr_q 0:d8f2f7d5f31b 168 it = m_respHeaders.begin();
mr_q 0:d8f2f7d5f31b 169 sprintf(line, "%s: %s\r\n", (*it).first.c_str(), (*it).second.c_str() );
mr_q 0:d8f2f7d5f31b 170 DBG("\r\n%s", line);
mr_q 0:d8f2f7d5f31b 171 m_pTCPSocket->send(line, strlen(line));
mr_q 0:d8f2f7d5f31b 172 m_respHeaders.erase(it);
mr_q 0:d8f2f7d5f31b 173 }
mr_q 0:d8f2f7d5f31b 174 m_pTCPSocket->send("\r\n",2); //End of head
mr_q 0:d8f2f7d5f31b 175 }
mr_q 0:d8f2f7d5f31b 176
mr_q 0:d8f2f7d5f31b 177 int HTTPRequestHandler::readLine(char* str, int maxLen)
mr_q 0:d8f2f7d5f31b 178 {
mr_q 0:d8f2f7d5f31b 179 int ret;
mr_q 0:d8f2f7d5f31b 180 int len = 0;
mr_q 0:d8f2f7d5f31b 181 for(int i = 0; i < maxLen - 1; i++)
mr_q 0:d8f2f7d5f31b 182 {
mr_q 0:d8f2f7d5f31b 183 ret = m_pTCPSocket->recv(str, 1);
mr_q 0:d8f2f7d5f31b 184 if(!ret)
mr_q 0:d8f2f7d5f31b 185 {
mr_q 0:d8f2f7d5f31b 186 break;
mr_q 0:d8f2f7d5f31b 187 }
mr_q 0:d8f2f7d5f31b 188 if( (len > 1) && *(str-1)=='\r' && *str=='\n' )
mr_q 0:d8f2f7d5f31b 189 {
mr_q 0:d8f2f7d5f31b 190 str--;
mr_q 0:d8f2f7d5f31b 191 len-=2;
mr_q 0:d8f2f7d5f31b 192 break;
mr_q 0:d8f2f7d5f31b 193 }
mr_q 0:d8f2f7d5f31b 194 else if( *str=='\n' )
mr_q 0:d8f2f7d5f31b 195 {
mr_q 0:d8f2f7d5f31b 196 len--;
mr_q 0:d8f2f7d5f31b 197 break;
mr_q 0:d8f2f7d5f31b 198 }
mr_q 0:d8f2f7d5f31b 199 str++;
mr_q 0:d8f2f7d5f31b 200 len++;
mr_q 0:d8f2f7d5f31b 201 }
mr_q 0:d8f2f7d5f31b 202 *str = 0;
mr_q 0:d8f2f7d5f31b 203 return len;
mr_q 0:d8f2f7d5f31b 204 }
mr_q 0:d8f2f7d5f31b 205
mr_q 0:d8f2f7d5f31b 206 void HTTPRequestHandler::onTCPSocketEvent(TCPSocketEvent e)
mr_q 0:d8f2f7d5f31b 207 {
mr_q 0:d8f2f7d5f31b 208
mr_q 0:d8f2f7d5f31b 209 DBG("\r\nEvent %d in HTTPRequestHandler\r\n", e);
mr_q 0:d8f2f7d5f31b 210
mr_q 0:d8f2f7d5f31b 211 if(m_closed)
mr_q 0:d8f2f7d5f31b 212 {
mr_q 0:d8f2f7d5f31b 213 DBG("\r\nWARN: Discarded\r\n");
mr_q 0:d8f2f7d5f31b 214 return;
mr_q 0:d8f2f7d5f31b 215 }
mr_q 0:d8f2f7d5f31b 216
mr_q 0:d8f2f7d5f31b 217 switch(e)
mr_q 0:d8f2f7d5f31b 218 {
mr_q 0:d8f2f7d5f31b 219 case TCPSOCKET_READABLE:
mr_q 0:d8f2f7d5f31b 220 resetTimeout();
mr_q 0:d8f2f7d5f31b 221 onReadable();
mr_q 0:d8f2f7d5f31b 222 break;
mr_q 0:d8f2f7d5f31b 223 case TCPSOCKET_WRITEABLE:
mr_q 0:d8f2f7d5f31b 224 resetTimeout();
mr_q 0:d8f2f7d5f31b 225 onWriteable();
mr_q 0:d8f2f7d5f31b 226 break;
mr_q 0:d8f2f7d5f31b 227 case TCPSOCKET_CONTIMEOUT:
mr_q 0:d8f2f7d5f31b 228 case TCPSOCKET_CONRST:
mr_q 0:d8f2f7d5f31b 229 case TCPSOCKET_CONABRT:
mr_q 0:d8f2f7d5f31b 230 case TCPSOCKET_ERROR:
mr_q 0:d8f2f7d5f31b 231 case TCPSOCKET_DISCONNECTED:
mr_q 0:d8f2f7d5f31b 232 DBG("\r\nConnection error in handler\r\n");
mr_q 0:d8f2f7d5f31b 233 close();
mr_q 0:d8f2f7d5f31b 234 break;
mr_q 0:d8f2f7d5f31b 235 }
mr_q 0:d8f2f7d5f31b 236
mr_q 0:d8f2f7d5f31b 237 }